20158377750 has 768 divisors, whose sum is σ = 70648381440. Its totient is φ = 4043520000.

The previous prime is 20158377739. The next prime is 20158377797. The reversal of 20158377750 is 5777385102.

20158377750 is a `hidden beast` number, since 201 + 5 + 8 + 377 + 75 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 20158377696 and 20158377705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 380346724 + ... + 380346776.

It is an arithmetic number, because the mean of its divisors is an integer number (91990080).

Almost surely, 2^20158377750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20158377750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35324190720).

20158377750 is an abundant number, since it is smaller than the sum of its proper divisors (50490003690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20158377750 is a wasteful number, since it uses less digits than its factorization.

20158377750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 20158377750 in words is "twenty billion, one hundred fifty-eight million, three hundred seventy-seven thousand, seven hundred fifty".